Any website can be hacked. Any honest security expert will tell you that. If you care about information from a website, you’d better back it up or print it out. Contrary to popular belief, the Internet is NOT forever.
I had one of my sites hacked by a script kiddie, recently. They were one of these immature types that sees free things given to society and instantly thinks, “I could deface that.” Really, they aren’t any more mature than taggers with their cans of spray paint. You can only back things up and hope the perps mature before karma comes around.